| Copa Libertadores 1999 - Appearances as Referee |  |
 |
 |
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| 02/03/1999 | Cerro Porteño | - | Palmeiras | 2:5 | 2 | - | - |
| 13/04/1999 | River Plate | - | LDU Quito | 1:0 | 3 | 2 | - |
| 01/06/1999 | Deportivo Cali | - | Palmeiras | 1:0 | 3 | - | - |
| Copa Libertadores 1999 - Appearances as Referee | |
|
|
||||
| 02/03/1999 | Cerro Porteño | - | Palmeiras | 2:5 | 2 | - | - |
| 13/04/1999 | River Plate | - | LDU Quito | 1:0 | 3 | 2 | - |
| 01/06/1999 | Deportivo Cali | - | Palmeiras | 1:0 | 3 | - | - |
| Complete name: | Mario Sánchez Yanten |
| Born: | 22/07/1956 |
| Place of birth: |
Chile |
| Nationality: |
Chile |